code: def log_pre_api_call(self, model, messages, kwargs):
      print(f"Pre-API Call")
  
file_path: litellm/litellm/tests/test_configs/custom_callbacks.py
imports: from litellm.integrations.custom_logger import CustomLogger
  import inspect
  import litellm
label_desc: Use image node_id 2 for calling the testCustomCallbackProxy obj's underlying member method code with example usage: obj.log_pre_api_call(model, messages, kwargs) without return types